If you want t otransfer word file over remoting there are two methods
1>transfer it byte by byte or 2>use file stream

if you want to transfer filestream you need to import System.IO namespace

Imports System.IO or in C# using System.IO following code is in c#

then create object of filestream

FileStrem s=new FileStram(@"d:\somelocation\WordFile.Doc",FileMode.Open)

this will give you filestream object which you can pass as it is over remoting

and on the other end you need to recounstruct wordfile as follows

declare on byte arry then read all bytes from your stream class into this
byte arry and save that byte arry to disk using File class and use,
File.WriteAllBytes(@"D:\MaheshDeo\pic\Mahesh1.doc", bytearry)

Byte[] b=new Byte[Stream.length];

for(inti=0;i<=Stream.lnegth;i++)
{
  b[i]=Stream.readByte();
}

File.saveAllBytes(@"d:\SomeLocation\MyWordFile.doc",b);